diff --git a/admin/views.py b/admin/views.py
index 4cdb61d17..a292704ea 100644
--- a/admin/views.py
+++ b/admin/views.py
@@ -253,7 +253,6 @@ def mailboxes_raw(request, dom_id=None):
 def mailboxes_search(request):
     if request.method != "POST":
         return
-    addr = EmailAddress(request.POST["search"])
     local_part, domain = split_mailbox(request.POST["search"])
     query = Q(address__startswith=local_part)
     if domain is not None and domain != "":